Vessel



FIG. 1 is a top perspective view of a vessel;

FIG. 2 is a right-side elevational view thereof (the left, front and rear side elevational views are all identical to this view and thus are omitted);

FIG. 3 is a top elevational view thereof; and,

FIG. 4 is a bottom elevational view thereof.

The broken lines depict portions of the vessel that form no part of the claimed design. 

CLAIM What is claimed is the ornamental design for a vessel, as shown and described. 